Anyone here ever converted XWB files?

I found something online that said that Audacity should be able to open them and then save them as WAVs or MP3s, but if I import it as pure data, I just get a bunch of static, and if I just open it, it gives me a very short burst of sound. I want to convert Bastion's soundtrack to MP3 format, but due to its odd file format, I'm having trouble with such.---Dynasty Warriors 5 w/Xtreme Legends Progress:Lv20 common items: 8/10 Rare items: 29/29 Final Weapons: 34/48